This product is easy to measure, and the sample to be tested does not require any pre-treatment. Simply insert the water sample lifting tube directly into the system water sample to measure the total nitrogen concentration. The device has a particularly high measurement range of 0-500mg/L TN, and this method is mainly used for online automatic monitoring of total nitrogen concentration in waste (sewage) discharge point sources, surface water, etc.

Key Features:

·The unique design enables this product to have lower failure rates, lower maintenance requirements, lower reagent consumption, and higher cost-effectiveness compared to similar products.

·Select valve component: Choose the timing for reagent sampling.

·Measurement component: The reagent measurement is achieved through a visual photoelectric system, which overcomes the quantitative error caused by wear of the peristaltic pump tube; At the same time, quantification of trace reagents was achieved, with each dose being only 1.5 ml, greatly reducing the amount of reagents used.

·Sample injection component: Peristaltic pump negative pressure suction, there is always an air buffer zone between the reagent and the pump tube to avoid corrosion of the pump tube.

·Sealed digestion component: High temperature and high pressure digestion system accelerates the reaction process and overcomes the corrosion of equipment caused by the volatilization of corrosive gases in open systems.

·Reagent tube: Imported modified PTFE transparent hose with a diameter greater than 1.5 mm is used to reduce the probability of particle blockage in water samples.

Technical Indicators:

Method basis: Resorcinol spectrophotometric method;

Measurement range: 0.0-10mg/L, 0.5-100 mg/L, 5-500 mg/L;

Indication error: ≤ 0.5mg/L ± 0.05mg/L; ≥ 0.5mg/L, not exceeding ± 10%;

Repeatability: not exceeding ± 5%;

Stability: not exceeding ± 10% within 24 hours;

Measurement cycle: The measurement cycle is 30 minutes, and the digestion time can be arbitrarily modified between 5 minutes and 120 minutes;

Sampling period: time interval (adjustable from 10 min to 9999 min) and whole point measurement mode;

Calibration cycle: adjustable at any interval and time from 1 to 99 days;

Maintenance cycle: usually once a month, about 30 minutes each time;

Reagent consumption: less than 0.5 yuan/sample;

Output: 4~20mA (2 channels) RS232, RS485;

Environmental requirements: Indoor with adjustable temperature, recommended temperature range of+5-28 ℃; Humidity ≤ 90% (non condensing);

Power supply: AC220 ± 10% V, 50 ± 10% Hz, 5A;

Dimensions: Height 1570 x Width 500 x Depth 450 mm

Other: Abnormal alarms and power outages will not result in data loss; Touch screen display and command input;

After abnormal reset and power failure, the instrument will automatically discharge residual reactants and restore working status.